# chenyang CY USB C — USB-C PD to 12V DC Converter Adapter > The chenyang CY USB C to DC 12V Adapter is a compact USB-C PD trigger that converts a PD source to a 12V DC output via a 4.8×1.7 mm barrel plug. Ideal for powering routers, switches, and other 12V devices from power bank Tags: adapter, chenyang, usb-c, pd-trigger, dc-12v Source: https://www.amazon.co.jp/dp/B0B9R6378F Article page: https://web-autoai.com/articles/chenyang-cy-usb-c-dc-12v?lang=en Prices and ratings change over time — check the article page for the current values. --- ## Overview The chenyang CY USB C to DC 12V Adapter is a compact converter that lets you power 12V DC devices from any USB-C Power Delivery source. Measuring roughly 10×10×1 cm and weighing just 20 grams, it slips easily into a bag or pocket. The output side features a standard 4.8×1.7 mm DC barrel plug (center positive), which fits a wide range of routers, switches, small monitors, and other 12V gadgets. By automatically negotiating the USB PD protocol, the adapter draws 12V from the connected power supply—whether it’s a PD charger, power bank, or laptop adapter. No software or configuration is needed; it's truly plug-and-play. This makes it an excellent alternative to bulky AC adapters when traveling or tidying up a desk. ## Connectivity & Compatibility Input: USB Type-C female (USB PD 3.0 compliant) Output: DC 4.8×1.7 mm male plug (center positive, 12V fixed) Maximum current: Up to ~3A, limited by the PD power source Supported devices: Routers, network switches, small LCD monitors, LED strips, Raspberry Pi/Arduino projects that accept 12V DC input * Not compatible: Devices requiring 5V, 9V, or non-12V input; devices with reversed polarity or different barrel plug sizes Always check your device's voltage and plug dimensions before purchasing. The adapter does not support voltage switching—it outputs 12V only. ## Product Info The chenyang CY adapter is an entry-level USB-C PD trigger cable that has been available since around 2022. Warranty coverage varies by seller, typically ranging from one to six months. The package includes the adapter only; no manual is included. Positioned at the budget end of the PD trigger cable market, it offers basic functionality at a low price. Competing products from Anker, Cable Matters, or Ugreen are often priced higher but may include better build quality or additional features like indicator LEDs or longer cables. ## Best Use Cases Mobile workers who need to power network gear on the go: Connect a PD power bank to the adapter and run a 12V router or switch in a coffee shop, co-working space, or remote location. Ideal for pop-up offices or temporary setups. Users aiming to reduce desktop clutter: Replace multiple 12V wall warts with one high-wattage USB-C PD charger (e. g. , 65W or 100W) and power several devices through separate adapters. Simplifies cable management and reduces outlet usage. * Hobbyists and developers testing 12V circuits: Quick power source for prototyping without hunting for a dedicated supply. Useful for bench testing Raspberry Pi-powered projects, small motors, or LED arrays. Not recommended for applications requiring precise voltage regulation or high continuous current above 3A. If your equipment draws more power or needs a non-standard plug/polarity, look for a purpose-built power supply instead. ## Things to Consider This adapter relies entirely on USB PD negotiation. It will not work with non-PD USB-C ports (e. g. , basic phone chargers or older power banks without PD). The output current is ultimately determined by the PD source's capabilities—using a low-wattage 18W charger may limit current to around 1.5A, while a 60W+ charger can deliver up to 3A. The fixed 12V output means you must match the voltage exactly. 5V or 9V devices are incompatible. Also, the barrel plug is 4.8×1.7 mm with center positive; devices with 5.5×2.1mm or other sizes will need an adapter barrel. Durability is adequate for occasional use but not for daily hot-plugging. The connectors are metal, but repeated insertion/removal may wear the latch. For permanent installations, consider a fixed wiring solution. Overall, the chenyang CY adapter is a cost-effective way to bridge the USB-C PD ecosystem to legacy 12V equipment. ### Product Disclosure (Amazon) - Manufacturer: CHENYANG - Seller: Amazon US - Fulfilled by: Amazon US - ASIN: B0B9R6378F - Note: This article covers a manufacturer-made product based on Amazon listing details.